吸附
化学
水溶液中的金属离子
絮凝作用
废水
金属
工业废水处理
核化学
环境工程
有机化学
环境科学
作者
Jiayin Feng,Yijie Xu,Jianhui Ding,Jikun He,Yihan Shen,Guimeng Lu,Wensheng Qin,Haipeng Guo
标识
DOI:10.1016/j.jbiotec.2021.12.012
摘要
Bioflocculant may be a promising bioactivator for heavy metal removal duo to its eco-friendly properties and remarkable ability to adsorb heavy metals. In this study, bioflocculant production from a bacterium, Pseudomonas sp. GO2, was optimized and its removal efficiency for two heavy metal ions was evaluated. Results demonstrated that the maximal flocculation efficiency was achieved with concentration levels of 5 g/L glucose, 3 g/L casein, and 5 g/L NaCl, with an initial pH of 9.0, and a fermentation time of 48 h. Bioflocculant produced by GO2 had a stronger removal efficiency for Cd2+ than that of Pb2+, with highest removal efficiencies of 85.38% and 80.87%, respectively. The adsorption process was mainly dependent on the monolayer and chemisorption based on the adsorption isotherm and kinetic models. This study demonstrated that bioflocculant produced by the GO2 strain has the potential to be used in heavy metal treatment from industrial wastewater.
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